WO2020157950A1 - Information processing device, backup method, restore method, and program - Google Patents

Abstract

An iｎformation processing device (1) comprises a master virtual machine (6a) and slave virtual machines (6b, 6c). The master virtual machine (6a) is provided with a file collection unit (10b) for collecting files in the slave virtual machines (6b, 6c), an archive creation unit (11a) for creating an archive file of the collected files and storing the same in the master virtual machine (6a), and a master backup unit (12a) for creating the image file of a second virtual machine (6a) that includes the archive file of the files and backs up the same in an external storage device (3).

Description

Information processing device, backup method, restore method, and program

The present invention relates to an information processing device, a backup method, a restore method and a program.

In an information processing apparatus that has built a virtual environment, a plurality of virtual machines may be operated in synchronization with each other.
For example, in the field of factory automation, when a virtual machine operates a real-time operating system (hereinafter referred to as OS) and a control application, and another virtual machine operates a non-real-time OS and an information processing application so that both virtual machines are linked. Is.

An information processing device that has built a virtual environment has a storage device such as a hard disk device, and in case of a storage device crash, the data in the storage device may be backed up to an external storage device.

-Multiple virtual machines (guest OS) operate on the host OS. Patent Document 1 discloses that the host OS includes a backup function unit that backs up a virtual machine. From the host OS, the virtual machine looks like a collection of files including VHD (Virtual Hard Disk) files, and the backup function unit backs up the files that implement the virtual machine to back up the virtual machine. Here, in order for the virtual machine to operate stably, it is preferable to limit the functions of the host OS. For example, there is an information processing device in which a host OS specializes in managing virtual machines and restricts a user from accessing the host OS. In such a case, an information processing device that can realize backup on a virtual machine is required.

JP, 2013-156873, A

However, if a backup function unit is provided on the virtual machine, each virtual machine cannot recognize it as a collection of VHD files, and thus backup cannot be realized. That is, in a system including a plurality of virtual machines, it is difficult to properly perform a backup of the plurality of virtual machines in an information processing device that does not have a backup function unit in the host OS.

The present invention has been made in view of the above circumstances, and an object of the present invention is to realize backup of virtual machines in cooperation with virtual machines in an information processing apparatus including a plurality of virtual machines.

In order to achieve the above object, an information processing apparatus of the present invention includes a first virtual machine and a second virtual machine, and the second virtual machine collects files on the first virtual machine. Part, an archive creation part that creates an archive file of the collected files and stores it in the second virtual machine, and a backup that creates an image file of the second virtual machine including the archive file and backs it up to an external storage device And a section.

According to the present invention, in an information processing device including a plurality of virtual machines, the virtual machines can be backed up by linking the virtual machines.

The figure which shows the functional structure of the information processing apparatus which concerns on the 1st Embodiment of this invention. The figure which shows the hardware constitutions of the information processing apparatus of FIG. The figure which shows an example of the selection screen for the file collection list creation by the file collection setting part of FIG. The figure which shows an example of the file collection list created by selection from the selection screen of FIG. The flowchart which shows the file collection process of the file collection part of FIG. The flowchart which shows the master backup process of the master backup part of FIG. The flowchart which shows the master restoration process of the master restoration part of FIG. The flowchart which shows the slave restoration process of the file restoration part of FIG. The flowchart which shows the list preparation process of the file collection setting part of the information processing apparatus which concerns on the 2nd Embodiment of this invention. The flowchart which shows the file collection process of the file collection part of the information processing apparatus which concerns on the 2nd Embodiment of this invention. The flowchart which shows the backup process of the information processing apparatus which concerns on the 3rd Embodiment of this invention.

Hereinafter, an information processing device, a backup method, a restore method, and a program according to an embodiment of the present invention will be described in detail with reference to the drawings.

(First embodiment)
FIG. 1 is a block diagram showing a configuration of an information processing device 1 according to the exemplary embodiment of the present invention.
The information processing apparatus 1 is an industrial computer that controls FA (Factory Automation) equipment such as production machines, sensors, and drive equipment at a production site, collects data from the FA equipment, and performs various analyses.

A plurality of connected devices 2a, 2b, 2c are connected to the information processing device 1. The connected devices 2a, 2b, 2c include PLCs (Programmable Logic Controllers) that control controlled devices such as assembly robots. The information processing device 1 transmits information requesting data transmission and control information to the plurality of connected devices 2a, 2b, 2c, and the plurality of connected devices 2a, 2b, 2c requested data measured by sensors It sends various information such as data. Although three connected devices 2a, 2b, and 2c are shown in FIG. 1, this is an example and the number of connected devices is not limited.

An external storage device 3 such as a hard disk device or a tape device for storing backup data is connected to the information processing device 1.

The information processing device 1 builds a virtual environment in which a plurality of virtual computers operate on a physical computer. The information processing device 1 includes a hypervisor 4 and a root OS (Operating System) 5 that manages the hypervisor 4. A plurality of virtual machines 6a, 6b, 6c operate on the hypervisor 4. Guest OSs (Operating System) 7a, 7b, 7c are operating on the respective virtual machines 6a, 6b, 6c. A plurality of files 8a and 8b such as application programs and user data exist on the guest OSs 7b and 7c, respectively.

The hypervisor 4 is a software program for realizing multiple virtual machines. The hypervisor 4 allocates resources such as a CPU (Central Processing Unit) processing capacity, a RAM (Random Access Memory), and a recording area of a hard disk to a plurality of virtual machines 6a, 6b, 6c.

Root OS 5 is an operating system that activates and manages the hypervisor 4, and is synonymous with the host OS. The root OS 5 is a real-time OS with high real-time responsiveness.

The virtual machines 6a, 6b, 6c are virtualized computers that operate on the hypervisor 4. Each virtual machine 6a, 6b, 6c behaves like the hardware of one computer.

The guest OSs 7a, 7b, 7c are OSs installed in the virtual machines 6a, 6b, 6c and operating in the virtual machines 6a, 6b, 6c. The guest OSs 7a, 7b, and 7c are real-time OSs having high real-time responsiveness for performing real-time control of FA devices, or non-real-time general-purpose OSs equipped with abundant application programs. The virtual machines 6a, 6b, 6c are each equipped with a real-time OS or a general-purpose OS as the guest OS 7a, 7b, 7c.

On the guest OS, which is a real-time OS, a software program for controlling the FA device, a software program for collecting data from the FA device, a software program for diagnosing the collected data, a software program for setting various parameters of the FA device, and the collected data. A file for data of the data diagnosis result is provided.

On the guest OS, which is a general-purpose OS, a software program that analyzes/analyzes the data collected from FA devices, and files such as data of analysis/analysis results are provided.

-These software programs operate on the guest OSs 7a, 7b, 7c and execute processing.

Unlike the other virtual machines 6b and 6c, the virtual machine 6a includes a backup/restore device 9. The backup/restore device 9 backs up and restores files of software programs and data in the virtual machines 6b and 6c to the external storage device 3 and from the external storage device 3 as described later. The virtual machine 6a equipped with the backup/restore device 9 operates as a master, and the virtual machines 6b and 6c serve as slaves to be backed up and restored. The virtual machine 6a is preferably operated by a general-purpose OS. The general-purpose OS has abundant drivers, and it is easy to prepare an interface with the external storage device 3, and the virtual machine 6a including the backup/restore device 9 has an advantage of using the general-purpose OS. On the other hand, the virtual machines 6b and 6c operate with a real-time OS. The real-time OS does not have an interface for connecting to the external storage device 3 because the real-time OS is not rich in drivers and may require a dedicated design. Even with such a configuration, the virtual machines 6b and 6c can be backed up via the virtual machine 6a. The virtual machines 6b and 6c are an example of a first virtual machine, and the virtual machine 6a is an example of a second virtual machine. In the present embodiment, two virtual machines 6b and 6c are described as slave virtual machines, but this is an example of implementation, and the number of slave virtual machines is not limited.

The backup/restore device 9 collects the files stored in the slave virtual machines 6b and 6c and restores the files to the slave virtual machines 6b and 6c, and the virtual machines 6b and 6c. A data conversion unit 11 that converts the collected files into an archive file and expands the archive file, and a master backup/restore unit 12 that backs up the image file and restores the backed up image file are provided.

Archive files are files that combine multiple files into one. An image file is data in which data recorded in a storage device is filed while maintaining the file and folder structure.

The file collection/restoration unit 10 includes a file collection setting unit 10a that creates a list of files to be collected from the slave virtual machines 6b and 6c, and a file collection unit that collects files from the slave virtual machines 6b and 6c based on the list. 10b and a file restore unit 10c for restoring files to the virtual machines 6b and 6c.

The file collection setting unit 10a specifies files to be backed up among files stored in the slave virtual machines 6b and 6c, and creates a file collection list 13 that is a list of the specified files to be backed up. .. Further, the file collection setting unit 10a also specifies files to be backed up for the files stored in the connected devices 2a, 2b, 2c and creates the file collection list 13. Prior to the creation of the file collection list 13, the file collection setting unit 10a displays a selection screen for selecting a backed up file and prompts the user to select a file that needs to be backed up.

The file collection unit 10b accesses the slave virtual machines 6b, 6c and the connection devices 2a, 2b, 2c based on the created file collection list 13 to select files to be backed up for each virtual machine and each connection device. collect. Further, the file collection unit 10b instructs the data conversion unit 11 to convert the collected files into archive files for each of the virtual machines 6b and 6c and the connected devices 2a, 2b and 2c.

The file restore unit 10c restores the collected files to the virtual machines 6b, 6c and the connected devices 2a, 2b, 2c.

The data conversion unit 11 includes an archive creation unit 11a that creates an archive file of the collected files and an archive expansion unit 11b that expands the archive file.

The archive creation unit 11a creates a slave archive file 14 by converting the files collected by the file collection unit 10b into archive files for each of the slave virtual machines 6b, 6c and the connected devices 2a, 2b, 2c. The archive creating unit 11a saves the created slave archive file 14 in the storage area of the master virtual machine 6a.

The archive expansion unit 11b expands the slave archive file 14 read by the file restore unit 10c.

The master backup/restore unit 12 includes a master backup unit 12a that backs up the image file of the virtual machine 6a that is a master, and a master restore unit 12b that restores the backed up image file of the virtual machine 6a. The master backup unit 12a is an example of the claimed backup unit, and the master restore unit 12b is an example of the claimed restore unit.

The master backup unit 12a converts all the data in the virtual machine 6a into an image file, creates a master image file 15, and stores it in the external storage device 3 as a backup file.

The master restore unit 12b reads the master image file 15 that is a backup file stored in the external storage device 3, expands it, and restores it in the virtual machine 6a.

The backup/restore device 9 creates a file collection list 13, a slave archive file 14, and a master image file 15 in the process of backup.

The file collection list 13 is a list of files to be backed up among the files included in the slave virtual machines 6b and 6c and the connected devices 2a, 2b and 2c created by the file collection setting unit 10a. The file collection list 13 is stored in the storage area of the master virtual machine 6a.

The slave archive file 14 is a file included in the slave virtual machines 6b and 6c and the connected devices 2a, 2b and 2c, which are converted into archive files by the data conversion unit 11. The slave archive file 14 is stored in the storage area of the master virtual machine 6a.

The master image file 15 is an image file of all data stored in the storage area of the master virtual machine 6a including the slave archive file 14. The master image file 15 is stored in the external storage device 3.

The virtual machine initialization unit 16 initializes the information processing device 1 to the factory shipping state. After the initialization, the information processing device 1 is restored to a state in which the guest machines 7a, 7b, 7c are included in the virtual machines 6a, 6b, 6c. However, the master virtual machine 6a is restored to a state in which the backup/restore device 9 is included in addition to the guest OS 7a.

FIG. 2 shows an example of the hardware configuration of the information processing device 1.
The information processing apparatus 1 includes a CPU 31 that performs control processing, a ROM (Read Only Memory) 32 that stores programs and data, a RAM 33 that is a temporary storage area for programs and data, and a hard disk that is a large-capacity storage device. The apparatus 34 includes an apparatus 34, an input/output unit 35 that transmits and receives to and from an external device, an operation unit 36 that performs an input operation, and a display unit 37 that displays an image. The components included in the information processing device 1 are connected to each other via a bus.

The CPU 31 controls the overall operation of the information processing device 1. The CPU 31 operates according to a program stored in the ROM 32 and uses the RAM 33 as a work area. The ROM 32 stores programs and data for controlling the overall operation of the information processing device 1. The RAM 33 functions as a work area for the CPU 31. That is, the CPU 31 temporarily writes a program and data in the RAM 33, and appropriately uses these programs and data.

The hard disk device 34 is a non-volatile storage device that stores information. The hard disk device 34 stores a virtual machine program, an OS, various application programs, and data.

The input/output unit 35 is an input/output interface that transmits/receives data to/from the external storage device 3 and the connected devices 2a, 2b, 2c.

The operation unit 36 is a device that is operated by a user and inputs various instructions to the CPU 31, and includes a keyboard, a mouse, and the like.
The display unit 37 displays a screen of execution results of various processes, an operation screen, and the like.

Next, the operation of the information processing device 1 having the above configuration will be described.

The information processing device 1 transmits the control program executed by the connected devices 2a, 2b, 2c to the connected devices 2a, 2b, 2c. The connected devices 2a, 2b, 2c control the controlled device by executing the control program. Further, the information processing device 1 requests the connected devices 2a, 2b, 2c for the data of the controlled device. The connected devices 2a, 2b, 2c collect data. The collected data is transmitted to the information processing device 1.
Here, the device control and the data collection are executed by the virtual machine equipped with the real-time OS among the virtual machines 6a, 6b, 6c. Further, the analysis of the collected data is executed by the virtual machine having the general-purpose OS installed among the virtual machines 6a, 6b, 6c.

Next, the backup process in the information processing device 1 will be described.
The backup process is performed by the backup/restore device 9 in the master virtual machine 6a when a file is added, changed, or deleted, when a user's instruction is received, or periodically. The backup process is performed in two stages. In the first stage, the files 8a, 8b in the slave virtual machines 6b, 6c and the files 8c, 8d, 8e in the connected devices 2a, 2b, 2c are collected to create an archive file, and the archive file is set as a virtual file of the master. Saving in the storage area of the machine 6a. The second step is to save the image file of the master virtual machine 6a in the external storage device 3.

Before collecting files in the first stage slave virtual machines 6b and 6c and the connected devices 2a, 2b and 2c, a list designating files to be collected is created.
First, the user calls the file collection setting unit 10a of the file collection/restoration unit 10 from the backup/restore device 9 to specify a file to be backed up. The file collection setting unit 10a selects a file to be backed up from the files 8a, 8b, 8c, 8d, and 8e in the slave virtual machines 6b and 6c and the connected devices 2a, 2b, and 2c. The user creates a file collection list 13, which is a list of files to be backed up by the unit 10a.

When the file collection setting unit 10a is called, a selection screen for selecting a backup target file is displayed on the screen of the display unit 37.
First, the user backs up from the slave virtual machines 6b and 6c excluding the master virtual machine 6a in the information processing apparatus 1 and a plurality of connected devices 2a, 2b and 2c connected to the information processing apparatus 1. Select the virtual machine or connected device where the desired file exists.
When the virtual machine or the connected device is selected, the file collection setting unit 10a accesses the selected virtual machine or the connected device and reads the file configuration information of the selected virtual machine or the connected device. The read file configuration information is displayed on the display unit 37 as a selection screen. This file configuration information is presented to the user so that the user can select the file to be backed up.

FIG. 3 shows an example of a selection screen 41 for selecting files to be backed up.
The selection screen 41 hierarchically displays the file structure in the selected virtual machine or connected device. The file name is displayed to the right of the icon of each file. In FIG. 3, the uppermost file 42a displays "aaaa" as the file name. In the file 42a with the file name "aaaa", the file 42b with the file name "bbbb" and the file 42c with the file name "cccc" are displayed as the lower layer files. In the file 42c, a file 42d with a file name "dddd" and a file 42e with a file name "eeee" are displayed as lower level files. A check box is provided on the left side of the icon of each file. The user selects a file to be backed up by checking the check box of the file to be backed up.

The file includes an application program created by the user, a data file created by the user by the application program, an application program customized by the user, an OS setting information file, and the like.
The user selects these files created and changed by the user as files to be backed up. In an embedded OS with few user-configurable points, the data that the user can change is limited. Therefore, by excluding files that have not been changed by the user from backup targets, the backup size can be reduced, and the storage device can save the storage capacity required for backup.
On the selection screen 41, files that are not likely to be changed in settings, OSs, application programs, and various data that are recovered by the recovery process of the information processing apparatus 1 to the factory shipping state may be excluded from selection targets. Since these files are not displayed on the selection screen 41 or the check boxes are not provided even if they are displayed, these files are excluded from the selection target.

It should be noted that, in the case where a backup has been performed before, and there is a file whose file content has not changed, the display of the selection screen 41 may display that the file is not changed. Alternatively, the file may be excluded from the display target. Whether or not the file contents have been changed is determined by whether or not the file dates match and whether or not the file sizes match.

When the user selects the file 42a by, for example, checking the check box of the file 42a, the lower-layer files 42b to 42e are also selected. Similarly, when the file 42c is selected by checking the check box of the file 42c, the lower- layer files 42d and 42e are also selected. As shown in FIG. 3, when only the file 42d is selected, the check box of the file 42d is checked.

When the selection of the file is completed, the user executes the confirmation button to confirm the selection.
The user continues to select another virtual machine or connected device that has not yet selected the file to be backed up and selects the file in the same manner as above.
When the backup target files have been selected for all the slave virtual machines 6b and 6c and the connected devices 2a, 2b and 2c, the user selection process for creating the file collection list 13 ends.
The file collection setting unit 10a creates the file collection list 13 based on the user's selection.

FIG. 4 shows the structure of the created file collection list 13.
The connection device information 1 to n indicates the connection devices 2a, 2b and 2c connected to the slave virtual machines 6b and 6c and the information processing device 1. The connected device information is provided as many as the number of slave virtual machines 6b and 6c and connected devices 2a, 2b and 2c connected to the information processing apparatus 1, but the slave devices not selected by the user because backup is not necessary. Virtual machines, connected devices, and connected devices that do not have files are excluded.
The connected device information has connection information and target file configuration information.

The connection information includes identification information of the slave virtual machines 6b, 6c or the connection devices 2a, 2b, 2c, the number of retries for accessing the slave virtual machines 6b, 6c or the connection devices 2a, 2b, 2c, and status information. doing. At the time of file collection, the target slave virtual machines 6b, 6c or the connected devices 2a, 2b, 2c are accessed based on the identification information. As the number of retries, the number of retries required for access is recorded. Whether or not the access is completed is recorded in the status information.

The target file configuration information indicates the information of the file that the user needs to back up among the files existing in the target slave virtual machines 6b and 6c or the connected devices 2a, 2b and 2c.
The file path, file name, file type, and file size of the target file are recorded as the target file information.

When the file collection list 13 is created, a file collection execution permission screen is displayed on the screen of the display unit 37. The user instructs the file collection/restoration unit 10 to execute the file collection by executing the execution button on the screen.
The file collecting unit 10b of the file collecting/restoring unit 10 collects the files 8a, 8b to be backed up/restored from the slave virtual machines 6b, 6c by referring to the file collecting list 13 according to the flow shown in FIG. If the file collection list 13 includes the connected devices 2a, 2b, 2c, the files 8c, 8d, 8e to be backed up/restored by the connected devices 2a, 2b, 2c are also collected.

First, it is determined whether or not all the device information of the slave virtual machines 6b, 6c and the connected devices 2a, 2b, 2c to be backed up has been read (step S101).
At first, since no device has been accessed and the device information has not been read yet (step S101: No), one piece of connected device information is read from the file collection list 13 (step S102).
The connection information is read from the read connection device information and the identification information in the connection information is used to access the slave virtual machines 6b, 6c or the connection devices 2a, 2b, 2c (step S103).
If the access is successful (step S104: Yes), the file to be backed up is downloaded by referring to the target file information of the connected device information (step S105).
When the access has failed (step S104: No), it is determined whether the number of retries for accessing the target slave virtual machines 6b, 6c or the connected devices 2a, 2b, 2c exceeds a specified value (step S104: No). Step S106).
If the number of retries does not exceed the specified value (step S106: No), the number of retries is incremented by 1 (step S107), the process returns to step S103, and the access is performed again.

When the target file is downloaded, the data conversion unit 11 is instructed to create an archive file for each of the slave virtual machines 6b, 6c and the connected devices 2a, 2b, 2c from the downloaded file (step S108). In response to the creation instruction, the archive creation unit 11a of the data conversion unit 11 compresses the target file for each of the target slave virtual machines 6b, 6c or the connected devices 2a, 2b, 2c, converts the target file into an archive file, The slave archive file 14 is created. The created slave archive file 14 is saved in the storage area of the master virtual machine 6a (step S109). When the storage is completed, the status in the connection information is changed to complete (step S110). Also, when the number of retries for accessing the slave virtual machine or the connected device exceeds the specified value (step S106: Yes), the status is changed to complete (step S110).

When the backup of the slave virtual machines 6b, 6c or the connected devices 2a, 2b, 2c is completed, it is confirmed whether there are any other slave virtual machines 6b, 6c or the connected devices 2a, 2b, 2c that need to be backed up ( Step S101). If there is another one, the above-described processing from step S102 to step S110 is repeated. If there is no other slave virtual machine 6b, 6c or connected device 2a, 2b, 2c that requires backup (step S101: Yes), the process ends.
The slave archive files 14 are created by the number of accessed virtual machines 6b, 6c and connected devices 2a, 2b, 2c, and are stored in the storage area of the master virtual machine 6a.

When the file collection process ends, the display unit 37 displays that the file collection has ended. The user confirms on the display screen that the slave archive files 14 have been created for all the target slave virtual machines 6b, 6c and the connected devices 2a, 2b, 2c.
The display screen displays an execution permission screen for backup of the image file of the master virtual machine 6a. The user instructs the master backup/restore unit 12 to execute the master backup process by executing the execution button on the screen.

When the user instructs the master backup/restore unit 12 to execute a backup, the master backup unit 12a of the master backup/restore unit 12 starts the master backup process of backing up the image file of the master virtual machine 6a.

As shown in FIG. 6, the master backup unit 12a creates all the data in the master virtual machine 6a into one image file to create the master image file 15 (step S201). The master image file 15 also includes data stored in the storage area of the master virtual machine 6a. That is, the file collecting/restoring unit 10 collects the files, and the data converting unit 11 also includes the slave archive file 14 converted into the archive file and the file collection list 13. The master image file 15 converted into an image file is stored in the external storage device 3 (step S202), and the master backup process ends.

The backup destination is not limited to the external storage device 3 and may be a backup area in the hard disk device 34. The backup destination may be specified by the user in the master backup/restore unit 12.
Since the master backup/restore unit 12 has a general-purpose function of backing up/restoring the image file of the virtual machine 6a, it may be a system restore tool included in the operating system or commercially available backup/restore software.

The backup process is complete. The data in the virtual machine 6a to be backed up does not include the guest OS 7a and the backup/restore device 9. The information processing apparatus 1 backs up only the files in the virtual machine, and the common part is complemented by being restored by the virtual machine initialization unit 16 which is an initialization function included in the product itself.

In the backup process described above, files to be backed up by the slave virtual machines 6b, 6c and the connected devices 2a, 2b, 2c are collected, and the collected files are saved as slave archive files 14 in the storage area of the master virtual machine 6a. The master virtual machine 6a. The master backup/restore unit 12 backs up the entire virtual environment of the master to the external storage device 3. As described above, in an information processing apparatus including a plurality of virtual machines, the virtual machines can be backed up by cooperation of the virtual machines.

Since the backup target is the master virtual environment, the image size is reduced compared to backing up all drives. Further, since it is possible to make one image file, it is not necessary to manage and back up the image file for each virtual environment. Therefore, the time required for backup is also reduced.

Also, when backing up from all drives, it is necessary to boot from the boot drive and start the backup/restore program. Due to the limitations of the virtual environment, the drives of other virtual environments cannot be viewed directly, so access to all drives requires booting from another drive. In this case, since it is necessary to stop each virtual environment and the processing of each environment cannot be continued, availability decreases.
On the other hand, since the backup process is executed on the guest OS 7a of the master virtual machine 6a, it is not necessary to stop all the virtual machines, so that it is possible to prevent a decrease in availability.

Next, the restore process will be described.
The restore process is performed by initializing the information processing apparatus 1 to the factory shipping state and then restoring the backed up data. After initialization, the master image file 15 stored in the external storage device 3 is expanded to restore the image file of the master virtual machine 6a. After the master virtual machine 6a is restored, the slave archive file 14 is expanded and the slave virtual machines 6b, 6c and the connected devices 2a, 2b, 2c are restored.

First, a process of initializing the information processing device 1 to the factory shipping state will be described.
The user uses the virtual machine initialization unit 16 included in the information processing device 1 to initialize the information processing device 1 to the factory shipping state. After the initialization, the information processing device 1 is restored to a state in which the guest machines 7a, 7b, 7c are included in the virtual machines 6a, 6b, 6c. The master virtual machine 6a is restored to a state in which the guest OS 7a further includes the backup/restore device 9.

A recovery program for initializing the information processing device 1 to the factory default state is stored in the recovery area in the hard disk device 34 of the information processing device 1. The recovery program may be stored in a portable recording medium such as the ROM 32 of the information processing device 1, the external storage device 3, a CD-ROM (Compact Disc Read Only Memory), a DVD-ROM (Digital Versatile Disc Read Only Memory), or the like. Good.
When the information processing device 1 is powered on, the information processing device 1 reads a BIOS (Basic Input Output System) from the ROM 32 and executes the BIOS. When the BIOS is executed, the user performs a key input operation to display a boot device setting screen. The user sets the hard disk device 34 in which the recovery program is stored on the setting screen as a boot device. When the setting is performed, the recovery program in the recovery area of the hard disk device 34 is read and the virtual machine initialization unit 16 is activated.

An image file of the storage contents of the hard disk device 34 at the time of factory shipment is stored in the recovery area of the external storage device 3, the portable recording medium or the hard disk device 34. The image file includes a root OS, hypervisor, guest OS, backup/restore program, device driver, application program, and various data. The virtual machine initialization unit 16 installs the image file and restores the information processing apparatus 1 to the initial state when shipped from the factory.

When the information processing apparatus 1 is restored to the initial state when shipped from the factory, each virtual machine is set to have a guest OS, application programs, etc. installed, and the master virtual machine 6a is further provided with a backup/restore apparatus 9. Is set
The user restarts the information processing device 1 after initializing the information processing device 1. The information processing device 1 executes the BIOS, reads the OS from the hard disk device 34, loads the OS into the RAM 33, and activates the OS. The user activates the backup/restore device 9 from the master virtual machine 6a to execute a process of restoring the virtual machines 6a, 6b, 6c and the connected devices 2a, 2b, 2c. The backup/restore device 9 may be automatically started by restarting the information processing device 1.

The user designates the master image file 15 stored in the external storage device 3 as the restore source to the master backup/restore unit 12 of the backup/restore device 9 and instructs the execution of the restore. Upon receiving the restore execution instruction, the master restore unit 12b of the master backup/restore unit 12 starts the master restore process for restoring the master image file 15.

As shown in FIG. 7, the master restore unit 12b reads the master image file 15 from the external storage device 3 (step S301). The master restore unit 12b restores the data of the virtual machine 6a by writing the read master image file 15 in the storage area of the master virtual machine 6a (step S302). After the restoration is executed, the master virtual machine 6a is restored to a state including the data of the master virtual machine 6a, the slave archive file 14, and the file collection list 13.

When the master restore process ends, the display unit 37 displays a message indicating that the restore of the master virtual machine 6a has ended. The user confirms that the master virtual machine 6a has been restored.
The display screen displays a restore execution permission screen for the slave virtual machines 6b, 6c and the connected devices 2a, 2b, 2c. The user instructs the file collection/restoration unit 10 to execute the slave restoration process by executing the execution button on the screen.

The file restoration unit 10c of the file collection/restoration unit 10 executes slave restoration processing according to the flow shown in FIG.
The file restoration unit 10c uses the data conversion unit 11 to expand the slave archive file 14 and convert it into a state in which it can be restored to the slave.
According to the file collection list 13, the file restore unit 10c uploads the file obtained by expanding the slave archive file 14 to the slave virtual machines 6b, 6c and the connected devices 2a, 2b, 2c.

First, it is determined whether or not all the device information of the slave virtual machines 6b and 6c to be restored and the connected devices 2a, 2b and 2c have been read (step S401).
At first, since neither device has been accessed and the device information has not been read yet (step S401: No), one piece of connected device information is read from the file collection list 13 (step S402).
Connection information is read from the read connection device information, and the identification information in the connection information is used to access the slave virtual machines 6b, 6c or the connection devices 2a, 2b, 2c (step S403).

If the access is successful (step S404: Yes), referring to the file collection list 13, the slave virtual machines 6b and 6c or the connection devices 2a, 2b and 2c downloaded to the archive decompression unit 11b of the data conversion unit 11 are referred to. An instruction to expand the slave archive file 14 is issued (step S405).
If the access has failed (step S404: No), it is determined whether the number of retries for accessing the target slave virtual machines 6b, 6c or the connected devices 2a, 2b, 2c exceeds a specified value (step S404: No). Step S406).
When the number of retries does not exceed the specified value (step S406: No), the number of retries is incremented by 1 (step S407), the process returns to step S403, and the access is performed again.

Upon receiving the expansion instruction of the slave archive file 14 in step S405, the archive expansion unit 11b responds to the expansion instruction by the target slave virtual machines 6b, 6c or the connected devices 2a, 2b, 2c stored in the master storage area. The slave archive file 14 of is expanded. The file restore unit 10c uploads the expanded file to the target slave virtual machines 6b, 6c or the connected devices 2a, 2b, 2c (step S408). When the upload is completed, the status in the connection information is changed to completed (step S409). Also, when the number of retries of access to the slave virtual machines 6b, 6c or the connected devices 2a, 2b, 2c exceeds the specified value (step S406: Yes), the status is changed to complete (step S409).

When restoration of one slave virtual machine 6b, 6c or connected device 2a, 2b, 2c is completed, it is confirmed whether there is another slave virtual machine 6b, 6c or connected device 2a, 2b, 2c that needs to be restored. (Step S401). If there are other items, the above-described processing from step S402 to step S409 is repeated. If there are no other slave virtual machines 6b, 6c or connected devices 2a, 2b, 2c that need to be restored (step S401: Yes), the slave restoration process ends.

In the present embodiment, the master restore unit 12b restores the virtual environment of the master virtual machine 6a from the master image file 15 of the external storage device 3. When the virtual environment of the master virtual machine 6a is restored, the slave archive file 14 is restored in the storage area of the master virtual machine 6a and expanded via the archive expanding unit 11b. The file restore unit 10c restores the expanded file to the target virtual machines 6b and 6c and the connected devices 2a, 2b and 2c.
Since the image file stored in the external storage device 3 is only the master image file 15, it is not necessary to manage the image file for each virtual environment and to backup/restore it.
In addition, it is possible to backup/restore files of connected connected devices, and it is possible to easily realize backup/restoration of the entire device or the entire manufacturing line.

(Second embodiment)
In the first embodiment, after the user selects files to be backed up from the slave virtual machines 6b, 6c and the connected devices 2a, 2b, 2c to create the file collection list 13, the files are collected based on this list. Was.
In the present embodiment, a new backup will be described when a file is added, updated, or deleted after the file is backed up as described above. Since the backup has already been performed previously, new backup data is created based on the difference from the previously backed up data.
Such backup is performed every time addition or update is performed, or periodically. Also, backup can be done automatically.

First, a list creation process for creating the file collection list 13 collected from the slave virtual machines 6b and 6c and the connection devices 2a, 2b and 2c will be described with reference to FIG.
First, the file collection setting unit 10a reads the previously created file collection list 13 from the storage area of the master virtual machine 6a (step S501). Next, the file collection setting unit 10a accesses the slave virtual machines 6b, 6c and the connected devices 2a, 2b, 2c to read the file configuration information (step S502). Next, the previously created file collection list 13 is compared with the read file configuration information, and the newly added, changed, or deleted file is extracted (step S503).

Whether a file has been added, changed, or deleted is determined by the file path name, file update date, file size, and the like.
If the new file path name exists, it is determined that the file has been added. If the file path name has not changed and the file update date and the file size have changed, it is determined that the file has been changed. When the file path name no longer exists, it is determined that the file has been deleted.

Here, the file collection list 13 created in the first embodiment is a list created by the user selecting whether or not the files need to be backed up. Therefore, a file that was not previously selected as not requiring backup may be recognized as a newly added file. On the other hand, a list of unselected files is created in the file collection list 13. With this, by referring to this list when extracting files, the files described in this list can not be recognized as additional files.
Alternatively, the determination may be made based on the file update date. If the update date of the file is before the creation date of the previous file collection list 13, it is determined that the file is not newly added this time.

When the newly added, changed, or deleted file is extracted, the previously created file collection list 13 is updated to create a new file collection list 13 (step S504).
The file collection list 13 may be separately created without updating the file collection list 13.

When the new file collection list 13 is created, the file collection unit 10b of the file collection/restore unit 10 collects the added and changed files based on the new file collection list 13. This file collection process will be described with reference to FIG.

First, based on the file collection list 13, the file collection unit 10b accesses the target slave virtual machines 6b, 6c and the connected devices 2a, 2b, 2c to download the added or changed file (step S601). .. Next, the previously created slave archive file 14 stored in the storage area of the master virtual machine 6a is expanded by the data conversion unit 11. The downloaded additional file is added to the file group obtained by expanding the slave archive file 14, and the file before change is replaced by the downloaded file after change. Further, the deleted file is deleted from the file group in which the slave archive file 14 is expanded (step S602).

When the addition, modification, and deletion of files are completed, the archive creation unit 11a creates an updated slave archive file 14 by converting the files into archive files for each slave virtual machine and each connected device (step S603). The created slave archive file 14 is stored in the storage area of the master virtual machine 6a.
When the slave archive file 14 is updated, the master backup unit 12a of the master backup/restore unit 12 converts all the data including the slave archive file 14 into one image file and creates the updated master image file 15. To do. The created master image file is stored in the external storage device 3.

The slave archive file 14 may not be updated by being replaced with the newly added, changed, or deleted file, and an archive file may be separately created for the newly added or changed file.
As described above, it becomes possible to back up the newly added, changed, or deleted file.

(Third Embodiment)
In the above embodiment, the file configuration information read by accessing the slave virtual machines 6b, 6c and the connected devices 2a, 2b, 2c is compared with the file collection list 13 to create a new backup file.
On the other hand, the slave virtual machines 6b and 6c and the connection devices 2a, 2b and 2c are accessed and read, and the slave virtual machines 6b and 6c and the connection devices in the state where the information processing apparatus 1 is initialized. A backup file may be created by comparing the file configuration information of 2a, 2b, and 2c and extracting the added, changed, or deleted file.

In this case, the file collection setting unit 10a reads out the file configuration information of the slave virtual machines 6b, 6c and the connected devices 2a, 2b, 2c and stores it in advance when the information processing device 1 is in the initialization state.
The backup process is performed when a file is added, changed, or deleted, when a user's instruction is received, or periodically. As shown in FIG. 11, first, the file configuration information in the initialized state stored in advance is read (step S701). Next, the file collection setting unit 10a accesses the slave virtual machines 6b, 6c and the connected devices 2a, 2b, 2c to read the file configuration information (step S702).
The read file configuration information and the file configuration information in the initialized state are compared to extract the added, changed, and deleted files, and the file collection list 13 is created (step S703).

Whether the file has been added, updated, or deleted is determined by the file path name, the file update date, the file size, and the like.
When the file collection list 13 is updated, the file collection unit 10b accesses the slave virtual machines 6b, 6c and the connected devices 2a, 2b, 2c based on the updated file collection list 13 to collect files. (Step S704). The collected file is converted into an archive file by the data conversion unit 11, and a slave archive file 14 is created. The updated slave archive file 14 is saved in the storage area of the master virtual machine 6a (step S705).

When the slave archive file 14 is updated, the master backup unit 12a of the master backup/restore unit 12 converts the entire data of the master virtual machine 6a into one image file and updates the master image file 15 (step S706). ..
In the above-described embodiment, the procedure of expanding the slave archive file 14 previously created in the second embodiment and adding, changing, or deleting the file to create a new slave archive file 14 can be omitted.

In the present invention, each process executed by the file collecting unit 10b, the archive creating unit 11a, the master backup unit 12a, the master restore unit 12b, the archive expanding unit 11b, and the file restore unit 10c is a program, and is read by a computer, for example. It may be stored in a recordable medium such as a CD-ROM or a DVD-ROM, which can be distributed. By installing this program in a computer, a computer that can realize the above-described processing may be configured. Then, in the case where each process is realized by sharing of the OS and the application, or when the OS and the application cooperate with each other, only the application may be stored in the recording medium.

The present invention can be variously embodied and modified without departing from the broad spirit and scope. Further, the above-described embodiments are for explaining the present invention and do not limit the scope of the present invention. That is, the scope of the present invention is shown not by the embodiments but by the scope of the claims. Various modifications made within the scope of the claims and the scope of the invention equivalent thereto are considered to be within the scope of the present invention.

The present invention can be widely applied to information processing devices that use virtual machines.

1 information processing device, 2a, 2b, 2c connected device, 3 external storage device, 4 hypervisor, 5 root OS, 6a, 6b, 6c virtual machine, 7a, 7b, 7c guest OS, 8a, 8b, 8c, 8d, 8e, 42a, 42b, 42c, 42d, 42e files, 9 backup/restore device, 10 file collection/restore unit, 10a file collection setting unit, 10b file collection unit, 10c file restore unit, 11 data conversion unit, 11a archive creation Section, 11b archive expansion section, 12 master backup/restore section, 12a master backup section, 12b master restore section, 13 file collection list, 14 slave archive file, 15 master image file, 16 virtual machine initialization section, 31 CPU, 32 ROM, 33 RAM, 34 hard disk device, 35 input/output unit, 36 operation unit, 37 display unit, 41 selection screen.

Claims (11)

1. Comprises a first virtual machine and a second virtual machine,
   The second virtual machine is
   A file collection unit that collects files on the first virtual machine;
   An archive creating unit that creates an archive file of the collected files and stores the archive file on the second virtual machine;
   A backup unit for creating an image file of the second virtual machine including the archive file and backing it up to an external storage device;
   An information processing apparatus including.
2. The first virtual machine is one or more virtual machines,
   The archive creation unit converts the collected files into one archive file for each of the first virtual machines,
   The information processing apparatus according to claim 1.
3. The second virtual machine further includes a file collection setting unit that specifies files to be collected from files other than the OS on the first virtual machine,
   The backup unit creates an image file of the second virtual machine including a specified list of files to be collected,
   The information processing apparatus according to claim 1.
4. The file collecting unit collects files on a connected device connected to the information processing device,
   The information processing apparatus according to any one of claims 1 to 3.
5. The second virtual machine is
   A restore unit for restoring the image file of the second virtual machine backed up by the backup unit,
   An archive expanding unit that expands the archive file created by the archive creating unit,
   A file restore unit for uploading the file obtained by expanding the archive file onto the first virtual machine;
   The information processing apparatus according to any one of claims 1 to 4, further comprising:
6. A virtual machine initialization unit that restores the first virtual machine and the second virtual machine in an initialized state,
   The information processing device according to claim 5.
7. The archive decompression unit decompresses the archive file based on the list of files to be collected included in the image file of the second virtual machine, and the file restoration unit decompresses the file obtained by decompression. Upload to 1 virtual machine,
   The information processing apparatus according to claim 5 or 6.
8. Collecting a specified file on the first virtual machine,
   Creating an archive file of the collected files and storing it on a second virtual machine;
   Backing up an image file of the second virtual machine including an archive file of the files;
   Backup method that includes.
9. Restoring an image file of a second virtual machine in which an archive file of files on the first virtual machine is stored,
   Decompressing an archive file of files on the first virtual machine;
   Uploading the extracted and obtained file onto the first virtual machine;
   Restoration method including.
10. On the computer,
    Collecting a specified file on the first virtual machine,
    Creating an archive file of the collected files and storing it on a second virtual machine;
    Backing up an image file of the second virtual machine including an archive file of the files;
    A program to execute.
11. On the computer,
    Restoring an image file of a second virtual machine in which an archive file of files on the first virtual machine is stored,
    Decompressing an archive file of files on the first virtual machine;
    Uploading the extracted and obtained file onto the first virtual machine;
    A program to execute.

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